Upper Triassic deposits formed at the onset of subsidence in Sichuan foreland basin South China, and may record a crisis carbonate deposition related to Carnian Pluvial Episode. However, there is no consensus yet on precise age these northwestern Sichuan. In this work, ammonoid biostratigraphy has been improved, U/Pb from detrital zircons obtained New taxa Sinotropites sichuanensis n. gen., sp....

Ordovician conodont collections from several Argentinian basins including the Eastern Cordillera, Famatina and Precordillera allow recognition of a group conodonts that comprise new genus here named Condorodus n. gen. Species this have an apparatus composed six elements recovered so far: Pa, Pb, Sb1, Sb2, Sc Sd. The differences mainly between P support recognizing three species, older to younge...

It updates the biostratigraphic refinement in the Indian Mesozoics with focus on the Triassic in Spiti, Jurassic in Kachchh, and Cretaceous in Kachchh and Cauvery. As an example, the ammonoid stratigraphic zonation in Kachchh basin inclusive of the new Oxfordian zones, as also the origin of the basin are developed at length. Also are touched upon the salient pre-sequence Paleozoic features as b...

Approximately 40% of a skeleton including cranial and postcranial remains representing a new genus and species of basal neotheropod dinosaur is described. It was collected from fallen blocks from a sea cliff that exposes Late Triassic and Early Jurassic marine and quasi marine strata on the south Wales coast near the city of Cardiff. Matrix comparisons indicate that the specimen is from the lit...

Microscope, cathodoluminescence, chemical and oxygen isotope studies have been conducted to determine the original mineralogy diagenetic alteration of phosphatic grasping spines Cambrian chaetognaths. The obtained data, along with a comparison composition conodont apatite, show presence few generations phosphate phases. A thin, outer layer is composed very early phosphate, which incrusted cutic...